Halo Effect In the 9Li+p and ¹¹Li+p Elastic Scatterings

Halo Effect In the 9Li+p and ¹¹Li+p Elastic Scatterings

The elastic angular distributions for ??Li+p and ¹¹Li+p at E??/A=60 and 62 MeV/nucleon, respectively, have been analyzed within the framework of the eikonal model. It is assumed that 11Li has the halo structure of a ??Li core plus two weakly bound neutrons and is treated that the nuclear potential has a sum of the core and halo neutron contributions. We have found that the break-up effect of halo neutrons is essential to understand the elastic cross sections of ¹¹Li+p system at E??/A=62 MeV/nucleon. The near-and the far-side decompositions of elastic cross sections have been also performed by following the Fuller's formalism.